Forum Discussion
Rejecting message based on email header ( in Office365 )
I have a very simple 'mail flow' rule which states that exchange should reject a message when it sees an email that has a header set to a specific value. The rule is in active/enforced mode but I can...
Hi Andy,
I tested sending email to a different smtp server using javamail client with header set and the header shows up on the other side. The same email client I used for testing with Exchange online just to be consistent but no avail.
Thanks
Did you test with telnet on port 25 sending to Office 365? Remove the client from the equation just to see.